television experience

What happened to the 3D revolution? Wasnt it supposed to be the biggest thing to enhance your movie and television experience? We got High Def, which as a nice step forward. But why not add 3D to it. Why not just add stupid 3D effects to make movies that are actually 2D even better. Reason 3D sucks and its dying just like it did back when it was first launched 30 something years ago.